817947012 has 48 divisors (see below), whose sum is σ = 1966144320. Its totient is φ = 264465792.

The previous prime is 817946977. The next prime is 817947019. The reversal of 817947012 is 210749718.

It is not an unprimeable number, because it can be changed into a prime (817947019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151414 + ... + 156722.

It is an arithmetic number, because the mean of its divisors is an integer number (40961340).

Almost surely, 2^817947012 is an apocalyptic number.

It is an amenable number.

817947012 is an abundant number, since it is smaller than the sum of its proper divisors (1148197308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

817947012 is a wasteful number, since it uses less digits than its factorization.

817947012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5700 (or 5698 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 817947012 is about 28599.7729361616. The cubic root of 817947012 is about 935.2083808290.

The spelling of 817947012 in words is "eight hundred seventeen million, nine hundred forty-seven thousand, twelve".